GKMLTTSB
Smash Ace
Considering I probably want more new characters from SEGA than all of the other partners and potential partners combined, I'd be very salty if they just hit up Sonic again. >_>Just gotta leave this out here...
It seems all well and good to label her the next Ridley, but here-in lies the problem; 1) Mai is a third-party, which is less easily accessible than the first-party Ridley, and 2) we still don't know if any third-party series will get a second unique newcomer this time, especially since can never seem to get any.
Fatal Fury, Final Fantasy, and Street Fighter, I get. Mega Man too (though that's heavily dependent on who).
Sonic though? :-(
Just saying...